Finding the Fourth Proportional to 12,307.75, 18,433.82 and 8,626.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,307.75 : 18,433.82 = 8,626.37 : x
2. Step 2: Convert to fraction form
   12,307.75/18,433.82 = 8,626.37/x
3. Step 3: Cross multiply
   12,307.75x = 18,433.82 × 8,626.37
4. Step 4: Simplify right side
   12,307.75x = 159,016,881.23
5. Step 5: Solve for x
   x = 159,016,881.23/12,307.75
6. Step 6: Final answer
   x = 12,920.06